deps.go

package cmd

import (
	"fmt"
	"os"
	"os/exec"

	"github.com/spf13/cobra"
	"github.com/spf13/viper"
)

// depsCmd represents the deps command
var depsCmd = &cobra.Command{
	Use:   "deps",
	Short: "Download and optionally update all abcweb dependencies",
	Long: `Download and optionally update all abcweb dependencies used by
your generated app or the abcweb tool by executing "go get" commands`,
	Example: "abcweb deps -u",
	// Needs to be a persistentPreRunE to override root's config.Initialize call
	// otherwise abcweb needs to be run from the abcweb project or the git rev-parse
	// will cause a fatal error.
	PersistentPreRunE: func(cmd *cobra.Command, args []string) error {
		viper.BindPFlags(cmd.Flags())
		return nil
	},
	RunE: depsCmdRun,
}

func init() {
	depsCmd.Flags().BoolP("update", "u", false, "Also update already installed dependencies")
	depsCmd.Flags().BoolP("verbose", "v", false, "Very noisy verbose output")
	depsCmd.Flags().BoolP("assets-only", "a", false, "Only install gulp.js dependencies")
	depsCmd.Flags().BoolP("go-only", "g", false, "Only install Go dependencies")

	RootCmd.AddCommand(depsCmd)
}

func depsCmdRun(cmd *cobra.Command, args []string) error {
	var err error

	goGetArgs := [][]string{
		{"github.com/google/wire/cmd/wire"},
	}

	npmInstallArgs := [][]string{
		{"gulp@v4"},
	}

	prependArgs := []string{"get"}
	if viper.GetBool("update") {
		prependArgs = append(prependArgs, "-u")
	}
	if viper.GetBool("verbose") {
		prependArgs = append(prependArgs, "-v")
	}

	for i := 0; i < len(goGetArgs); i++ {
		goGetArgs[i] = append(prependArgs, goGetArgs[i]...)
	}

	if !viper.GetBool("go-only") {
		prependArgs = []string{"install", "--global"}
		if viper.GetBool("verbose") {
			prependArgs = append(prependArgs, "--verbose")
		}

		for i := 0; i < len(npmInstallArgs); i++ {
			npmInstallArgs[i] = append(prependArgs, npmInstallArgs[i]...)
		}

		fmt.Printf("Retrieving all Nodejs dependencies using \"npm install --global\":\n\n")

		_, err = exec.LookPath("npm")
		if err != nil {
			fmt.Printf(`Error: npm could not be found in your $PATH. If you have not already installed nodejs
and npm you must do so before proceeding. Please follow the instructions at:
https://docs.npmjs.com/getting-started/installing-node

If you receive permission related errors, please apply the following fix:
https://docs.npmjs.com/getting-started/fixing-npm-permissions
`)
			os.Exit(1)
		}

		for _, npmInstallArg := range npmInstallArgs {
			fmt.Printf("%s ... ", npmInstallArg[len(npmInstallArg)-1])

			exc := exec.Command("npm", npmInstallArg...)
			out, err := exc.CombinedOutput()

			if err != nil {
				fmt.Printf("ERROR\n\n")
			} else {
				fmt.Printf("SUCCESS\n\n")
			}

			if len(out) > 0 {
				fmt.Print(string(out))
			}

			if err != nil {
				fmt.Printf("%s\n\n", err)
				fmt.Printf(`Note: If you are receiving a permission related exit status or error, please apply the following fix:
https://docs.npmjs.com/getting-started/fixing-npm-permissions
`)
				os.Exit(1)
			}
		}
	}

	if !viper.GetBool("assets-only") {
		fmt.Printf("\nRetrieving all Go dependencies using \"go get\":\n\n")

		for _, goGetArg := range goGetArgs {
			fmt.Printf("%s ... ", goGetArg[len(goGetArg)-1])

			exc := exec.Command("go", goGetArg...)
			exc.Env = append(os.Environ(), "GO111MODULE=off")
			out, err := exc.CombinedOutput()

			if err != nil {
				fmt.Printf("ERROR\n\n")
			} else {
				fmt.Printf("SUCCESS\n")
			}

			if len(out) > 0 {
				fmt.Print(string(out))
			}

			if err != nil {
				fmt.Printf("%s\n\n", err)
				os.Exit(1)
			}
		}
	}

	fmt.Printf("\nAll dependencies successfully installed.\n\n")

	return err
}